Gibson t



(No Model.)

G. T. AYER. Grate.

Patented June 28,1881.

UNITED STATES PATENT OFFICE.

AGIBSON T. AYER, OF CALHOUN, KENTUOKLYASSIGNOB OF ONE-HALF TO JEP. C. JONSON, OF SAME PLACE.

GRATE.

SPECIFICATION forming part of Letters Patent No. 243,347, dated June 28, 1881.

Application filed March 21, 1881.

- To all whom it may concern:

Be it known that I, GIBSON T. AYER, a citizen of the United States, residing at Calhoun, in the county of McLean and State of Kentucky, have invented certain new and useful Improvements in Gra-tes; and I do hereby de- Clare the following to be a full, clear, and exact description of the-invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention has relation to improvements in grates such as are used in tire-places; and it consists in providing the same with a removable back, which slides vertically in the rear of the tire-brick back, and is held in different positions for regulating the draft and heat, all of which will be hereinafter more fully explained. Y

The annexed drawings, to which reference is made, fully illustrate my invention, i which- Figure 1 represents a front view of my improved grate. Fig. 2 representsa central vertical sectional view of the same, and Fig. 3 represents a horizontal section.

The letter A designates the front or facing of the grate. This is ofsemicircular form at the top and rests against the wall of the room, and the saine is provided with vertical slotsa on each side of the grate. Said slots are provided with teeth a. There are also applied to the inside of said facing, and near the top thereof, guideways or anges a2 and curved rods a3 a3, which connect one side of the facing to the other.

B designates the grate or tire-basket proper, which is provided with hooks b b, which catch over the pins b b', secured in the lire-brick b2; and on the lower end of said grate there are hooks b3 b3, which enter holes also made in the brick.

C designates the removable back, which is constructed of suitable material, and placed directly in the rear ofthe fire-brick b2, and between the same and the rods ai a3. Said back is so constructed as to conform in shape to the brick aforesaid, and is provided with rods or handles bf b4, which are attached to and on each side of said back. The handles pass through the slots a a, and project sufficiently (No model.)

to serve in raising and lowering the back, which operation will be further explained.

Near the top of the facing A is a valve, c, provided with a handle, c', for purposes herein after mentioned.

Having thus given a description of the different parts of which my improved lire-grate 6o is composed, I will now proceed to explain the manner in which it is operated.

The fire is kindled in the grate B as usual.

At the saine time the handles b4 b4 are grasped by the attendant, and the same are Withdrawn from the teeth, which allows the back to fall behind the brick b2, and the damper or valve c being closed, as shown in Figs. l and2, leaves an opening, c4, through which the draft enters theiiuec. (Shownin dottedliues,Fig.2.) When 7o the fire is sufficiently hot, and the gases have left the coals and passed through the line, the handles b4 b4 may be grasped and relieved from the teeth, after which the back b'l is raised until sufliciently high to close the opening c, 7 5 thus causing the heat to enter the room, instead of passing up through the ue. Said back O is guided vertically by means of the flanges d cl coming in contact with the plates a2 on the facing A; also, the rods a3 a3 sup- 8o port and assist in guiding the same.

It will thus be seen from the foregoing description that I construct a grate that can be so regulated that much of the heat that would otherwise escape through the flue may be forced into the room, and at the same time the valve c serves in closing the draft, and when reversed to that shown in Fig. 2 leaves an opening, c2, that serves as a ventilator, and allows all the impurities that may be in the 9o room to escape through the flue aforesaid.

Having described myinventiomwhatl claim as new, and desire to secure by Letters Patent, 1s-

The removable back C, provided with handies b4 b4, working in the slots a a, in combination with the facing A, grate B, and valve c, as shown and described, and for the purpose specified.

In testimony whereof I affix my signature in roo presence of two witnesses.

GIBSON T. AYER.

Witnesses L. A. WA'rKINs, D. D. ROBERTSON. 

